linkerd2/bin/docker-build-go-deps

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#!/bin/bash
# Builds (or pulls) our go-deps docker image.
set -eu
if [ $# -ne 0 ]; then
echo "no arguments allowed for ${0##*/}, given: $*" >&2
exit 64
fi
bindir=$( cd "${BASH_SOURCE[0]%/*}" && pwd )
. "$bindir"/_docker.sh
. "$bindir"/_tag.sh
tag=$(go_deps_sha)
if (docker_pull go-deps "$tag"); then
echo "$(docker_repo go-deps):$tag"
else
rootdir=$( cd "$bindir"/.. && pwd )
docker_build go-deps "$tag" "$rootdir/Dockerfile-go-deps"
fi